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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>

    生日：<select name="birthday">
        <option selected="selected">2000</option>
        <option>2001</option>
        <option>2002</option>
        <option>2003</option>
        <option>2004</option>
    </select>
</body>
</html>